Visor



FIG. 1 is a perspective view of a visor showing my new design;

FIG. 2 is a front elevational view thereof; and

FIG. 3 is a rear elevational view thereof.

The helmet shown in broken lines in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a visor, as shown and described. 